DE102021125083A1 - Guillotine Severing Station - Google Patents

Abstract

The present invention relates to a device for producing a three-dimensional packaging product from a web-shaped starting material, comprising a preforming station which is set up to, by radially inward folding of lateral starting material web sections of the starting material, two lateral crumple cavities extending in the web direction and one lateral crumple cavities extending in the web direction to form a central fastening and/or deformation zone, in which the folded starting material web sections overlap and are bound to one another, and a separating station which follows the preforming station in the conveying direction and which separates a packaging product of a desired length from the starting material, with a cutting edge of the separating station being guided in this way is that, in the cutting engagement, it cuts through the starting material web transversely to the conveying direction against the direction of gravity in a translatory manner.

Description

The present invention relates to a device for mechanically producing a three-dimensional packaging product from a web-shaped paper starting material. Furthermore, the present invention relates to a packaging product produced by means of a packaging product production device according to the invention and to a system comprising a device for producing a three-dimensional packaging product from a web-shaped starting material and a starting material supply.

Generic packaging products are flexible and shock absorbing and are used to be placed in shipping crates or cartons to protect items in transit. A packaging product can therefore also be referred to as a shock-absorbing filling material product. A three-dimensional packaging product is formed by deforming a two-dimensional paper web stock in a predetermined manner to produce the three-dimensional packaging product indefinitely.

Waste paper is being used more and more frequently for the paper material, primarily for ecological reasons. However, due to its inhomogeneity, it is difficult to reshape, especially if the three-dimensional packaging product can always be produced uniformly and as simply and economically as possible. The web of packaging material can be made from paper, such as recycled paper, in particular waste paper and/or 100% recyclable paper, which can be produced without chemical ingredients. Recycled paper is, in particular, paper material with a small proportion (less than 50%) of paper material containing fresh fibers. For example, paper materials containing 70% to 100% waste paper are used. The recycled paper within the meaning of this invention can be paper material which can have a tensile strength index in the machine direction of at most 90 Nm/g, preferably a tensile strength of 15 Nm/g to 60 Nm/g, and a tensile strength index in the cross-machine direction of at most 60 Nm/g. g, preferably a tensile strength of 5 Nm/g to 40 Nm/g. A standard DIN EN ISO 1924-2 or DIN EN ISO 1924-3 can be used to determine the tensile strength or the tensile strength index. Additionally or alternatively, a recycled paper property or waste paper property can be characterized by the so-called bursting resistance. A material in this sense is recycled paper with a burst index of at most 3.0 kPa*m^2/g, preferably with a burst index of 0.8 kPa*m^2/g to 2.5 kPa*m^2/g. The DIN EN ISO 2758 standard is used to determine the bursting index. Furthermore, the packaging material has a mass per unit area of in particular 40 g/m2 to a maximum of 140 g/m2. The starting packaging material can be in the form of a roll of web material or a zigzag-folded stack of packaging material, which is also referred to as a leporello stack.

An example of a generic packaging product is in EP2711167B1 specified. In a first forming step according to EP2711167B1 the longitudinal edges of the paper web are essentially loosely rolled inward. In a central connecting section or middle area, which connects the two rolled-up longitudinal edge strips of the paper web section and which each create a crumple cavity, an embossing is introduced to stiffen and fix the longitudinal edge strips of the packaging product, which is formed by a sequence of valley and elevation sections. In this way, the laterally rolled cushion section, which delimits a cavity to form a crumple zone, should be significantly thicker than the embossed central area. In the embossed deformation or fastening zone in the central area, perforations can also be introduced, which cause the superimposed paper web layers to hook into one another.

A generic packaging product manufacturing device is, for example US2021/0023808A1 known. The packaging product manufacturing device comprises the following components, viewed in the conveying direction of the web-shaped starting material: a preforming station for forming lateral crumple cavities; an embossing station for embossing the center portion of the preformed paper web; a severing station for severing packaging products of a specified length from the preformed paper web; an output device via which the separated packaging products are discharged from the packaging product manufacturing device. The dispensing device comprises a pair of opposed conveyor belts which are driven by a common motor in order to actively convey the packaging products towards a removal opening of the machine at which the packaging products can be removed. The conveyor belts are arranged symmetrically with respect to a central axis lying between them and are inclined in such a way that the conveying path delimited between them decreases continuously, starting from an end on the side of the separating station towards the removal opening. The severing station comprises a blade of the guillotine type, which is mounted in such a way that it performs a cutting movement in the vertical direction in the direction of gravity during a cutting operation.

According to the construction and the arrangement of the two conveyor belts to each other US2021/002808A1 several disadvantages have been identified in relation to the creation and elimination of a paper jam that has occurred. In addition, there are other disadvantages with regard to the combination with the guillotine cut in the direction of gravity. Especially when short packaging products are to be manufactured, it has been found that because of the large vertical distance between the end of the lower conveyor belt on the cutting station side and the position at which the packaging product is separated from the preformed paper web, the packaging products tend to be unreliable enough to be caught and dragged along by the lower conveyor belt. Furthermore, the short packaging products, which more or less fall down after the separation, can tilt and jam inside the packaging machine, which can lead to a paper jam. This tendency is also increased because the cutting movement is performed in the gravitational direction, so that the trailing end of the packaging product to be severed is pushed down vertically by the blade, so that the leading end of the packaging product can stand up due to the leverage effect. Furthermore, there is room for improvement with regard to the reliable separation of the packaging products.

The inventors of the present invention have also recognized that there is a need for small paper packaging products, i.e. reduced in their width dimension transversely to the longitudinal extent, because these can be integrated more easily in narrow volumes to be padded in packaging cartons or bags. In the past, packaging products of the generic form with a corrugated, longitudinally extending embossing section and laterally symmetrically adjoining, tubular crumple cavities, which were produced by integrally forming a web-shaped starting material, were always produced to a fairly uniform size, the constraints of the paper material as well as the packaging product manufacturing devices intended for the production did not allow a width of less than 15 cm. The inventors of the present invention have now succeeded in providing a packaging product making apparatus capable of producing packaging products of the above structure with a width of less than 15 cm.

The object of the present invention is to overcome the disadvantages of the prior art, in particular to improve a device for producing a three-dimensional packaging product from a web-shaped paper starting material in such a way that a clean separation of packaging products is more reliably ensured, in particular the risk of paper jams is reduced.

The object is solved by the subject matter of the independent claims.

Accordingly, a device is provided for producing a three-dimensional packaging product, such as a cushioning product, from a web-shaped starting material, such as a single- or multi-ply paper web, in particular paper. Waste paper is being used more and more frequently for the paper material, primarily for ecological reasons. However, due to its inhomogeneity, it is difficult to reshape, especially if the three-dimensional packaging product can always be produced uniformly and as simply and economically as possible. The web of starting material can be made from paper, such as recycled paper, in particular waste paper and/or 100% recyclable paper, which can be produced without chemical ingredients. Recycled paper is, in particular, paper material with a small proportion (less than 50%) of paper material containing fresh fibers. For example, paper materials containing 70% to 100% waste paper are used. The recycled paper within the meaning of this invention can be paper material which can have a tensile strength index in the machine direction of at most 90 Nm/g, preferably a tensile strength of 15 Nm/g to 60 Nm/g, and a tensile strength index in the cross-machine direction of at most 60 Nm/g. g, preferably a tensile strength of 5 Nm/g to 40 Nm/g. A standard DIN EN ISO 1924-2 or DIN EN ISO 1924-3 can be used to determine the tensile strength or the tensile strength index. Additionally or alternatively, a recycled paper property or waste paper property can be characterized by the so-called bursting resistance. A material in this sense is recycled paper with a burst index of at most 3.0 kPa*m^2/g, preferably with a burst index of 0.8 kPa*m^2/g to 2.5 kPa*m^2/g. The DIN EN ISO 2758 standard is used to determine the bursting index. Furthermore, the packaging material has a mass per unit area of in particular 40 g/m2 to a maximum of 140 g/m2. The starting material can be in the form of a roll of web material or a zigzag-folded stack of packaging material, which is also referred to as a leporello stack.

In principle, the device can be dimensioned and designed in such a way that it is miniaturized, ie is dimensioned significantly smaller than corresponding devices from the prior art nik and/or is able to produce significantly smaller packaging products. This can satisfy the demand for small packaging products. On the other hand, devices according to the invention meet the demand for ever smaller storage areas available for such devices providing packaging products. For example, as a rule of thumb for the overall dimensions of generic devices, it was required that these should not exceed the external dimensions of a standard industrial pallet. For example, devices according to the invention have an overall dimension of less than 650 mm in length in the conveying device, less than 450 mm wide transversely to the conveying device and less than 300 mm high transversely to the conveying and width direction. The device according to the invention can be designed to produce small or miniature packaging products or cushions. Such small or miniature packaging products can have a length in the conveyor of less than 30 mm, a width of less than 120 mm, in particular in the range of 80 to 90 mm, and a height of less than 40 mm, in particular in the range of 20 to 30 mm.

The apparatus includes a preforming station configured to form the stock material by radially inward folding of lateral stock material web portions of the stock material two web-direction lateral crush cavities and a web-direction central overlap zone in which the folded over Stock material overlap sections of web. The starting material can be formed into a three-dimensional intermediate having at least one crush cavity extending in the web direction. In an exemplary embodiment of the device, the shape of the intermediate product can essentially correspond to the final packaging product. The packaging product is then produced from the intermediate product. Preferably, the preforming station includes a funnel-like wrapping or curling device, such as a convergence funnel, which wraps or curls the paper web laterally in the transverse direction as it is transported into the device, so that the longitudinal edges of the paper web, which are provided, for example, by means of a leporello stack source, are essentially in the middle of the paper web are folded over one another.

The preforming station can have a take-off device for drawing in and conveying the starting material. The take-off device can have a pair of continuous conveyors lying opposite one another, such as conveyor wheels or conveyor rollers. For example, the conveyor wheels or conveyor rollers can be prestressed against one another, in particular spring prestressed, so that a particularly elastic prestressing force is exerted on the starting material web. The continuous conveyors can basically be characterized by a continuous conveying movement. The continuous conveyors convey the starting material in the conveying direction, in particular with frictional engagement, in particular in the direction of an output opening at which the packaging products can be removed or are output or ejected. The continuous conveyors delimit a conveying channel between them, through which the starting material is transported. As a rule, the continuous conveyors at least partially delimit the conveying channel in the vertical direction upwards and downwards. Furthermore, lateral channel delimitation elements can be provided.

Furthermore, the device can comprise a deformation station in the conveying device of the starting material following the pre-shaping station, which can be formed by a pair of embossing and/or deformation wheels, which are set up to deform overlapping material web sections along a fastening and/or deformation zone extending in the direction of the web to bind together and to convey the preformed starting material. The embossing and/or deforming wheels intermesh in the attachment and/or deforming zone to deform the folded or curled web of stock material into the cushioning product. This creates the central attachment and/or deformation zone in the starting material. This specific upholstery product comprises a longitudinally central deformation area, in particular an embossing and/or perforation area, which is adjoined in the transverse direction by two lateral cavity crumple zones, the lateral end of which also forms the end of the upholstery product. In this respect, the device can produce a paper padding product that is essentially dumbbell-shaped in cross section.

The device also includes a separating station which follows the preforming station in the conveying direction of the starting material and which separates a packaging product of a desired length from the starting material.

According to one aspect of the present invention, a cutting edge of the separating station is guided in such a way that, in the cutting engagement, it cuts through the starting material web transversely to the conveying direction counter to the gravitational direction or transversely to the gravitational direction. For the purposes of the present application, severing is to be understood in particular to mean that the starting material web is continuous along at least 20% of its width running transversely to the web direction or is severed in sections, wherein the severing can be realized by partially severing, partially penetrating, perforating, (partially) piercing and/or scoring and generally by weakening the starting material web. This means that when the starting material web is severed, the cutting edge does not necessarily have to penetrate completely through the thickness of the web of material, but can only penetrate the thickness of the material web to a certain extent, for example. A cutting intervention is to be understood in particular as the point in time at which the cutting edge dips into the starting material web. In doing so, the cutting edge can dip into the starting material web over its entire depth, that is to say its longitudinal extent transversely to the conveying direction, in the cutting engagement. In other words, the cutting edge can run in a straight line in this depth direction, which is oriented parallel to the width extension of the starting material web. Due to the translational penetration of the starting material web in the cutting engagement transversely to the conveying direction, the starting material web is acted upon transversely to the conveying direction, in particular with a cutting force. This cutting force can cause the starting material web to be stretched in the conveying direction, in particular before the actual severing. For example, the cutting edge can be guided in such a way that it moves through the starting material web in a translatory manner. Cutting through the web of starting material counter to the direction of gravity has proven to be advantageous insofar as the weight of the web of starting material to be severed is thus oriented counter to the direction of translation cutting. Furthermore, it is thus possible to configure the device in a modular and/or very compact manner. Because the translational movement direction is oriented from bottom to top, i.e. against the direction of gravitation, all drive, motor and transmission components can be arranged at the bottom of the device, in particular below a conveying path leading through the device, along which the starting material web is conveyed. This ensures that free access to all components processed from the starting material web is possible from above, without stationary operating, transmission or motor components in particular getting in the way. These are then accessible from below in a compact, spatially arranged manner. The cutting edge works like a guillotine. The cutting movement direction transverse to the conveying direction can also be oriented transverse to the planar extension of the starting material web, which is defined by the conveying direction and a width direction of the starting material web oriented transverse to the conveying direction. In the case of the cutting movement direction transverse to the direction of gravitation, one can speak of a lateral cut, for example from left to right or vice versa.

In an exemplary embodiment of the device according to the invention, the device has a motor for providing a driving force and a transmission for transmitting the driving force to the cutting station. The motor-driven separating station has proven to be advantageous because the device as a whole can be machined without the intervention of an operator being necessary. In addition, the cutting off of individual packaging products can be controlled, in particular the length of the packaging products to be produced can be adjusted, and the cutting to length or cutting off of the packaging products to be produced can also be matched to the operation of the device according to the invention. Furthermore, the transmission and the motor are arranged below a vertical height defined by the cutting engagement. Furthermore, the motor and gearing can be arranged below the conveying path running through the device, along which the starting material web and finally the packaging product are guided through the device. In an alternative embodiment, the transmission and the motor can also be arranged above the vertical height defined by the cutting engagement.

According to a further aspect of the present invention, which can be combined with the preceding aspects and exemplary embodiments, a device for producing a three-dimensional packaging product from a web-shaped starting material is provided, which has a preforming station which is set up to fold lateral starting material web sections radially inwards of the starting material to form two lateral crumple cavities extending in the web direction and a central fastening and/or deformation zone extending in the web direction, in which the folded starting material web sections overlap and are bonded to one another, and comprises a severing station subsequent to the preforming station in the conveying direction, which separates a packaging product of a desired length from the starting material. With regard to the features of the preamble, reference can be made to the previous statements in order to avoid repetition.

According to another aspect of the invention, the severing station has a cutting edge that is designed and/or mounted in such a way that, during a severing process, a cut is made through the web of starting material transversely to the conveying direction, in particular transversely to the planar extension of the web of starting material, in the width direction of the starting material web spreads. In this case, a cutting action point, which is characterized by the contact of the cutting edge with the starting material web, can migrate during a severing process transversely to the conveying direction in the width direction of the starting material web during the severing process. For example, the severing process begins at a lateral edge of the web of starting material and propagates in the direction of and up to the opposite edge of the web of starting material. This results in a zipper-like opening or separation of the web of starting material. It has been found that this type of cutting motion and cutting propagation improves the quality of the cut on the stock web. In particular, the tendency to small micro-tears in the conveying direction and/or fraying is reduced, while at the same time an undesired deformation of the subsequent starting material web sections in the conveying direction, which are separated from one another, does not occur.

In an exemplary embodiment of the device according to the invention, the cutting edge cuts through the starting material web transversely to the conveying direction, in particular transversely to the flat extension of the starting material web, in a translatory manner. Due to the translational penetration of the starting material web in the cutting engagement transversely to the conveying direction, the starting material web is acted upon transversely to the conveying direction, in particular with a cutting force. This cutting force can cause the starting material web to be stretched in the conveying direction, in particular before the actual severing. For example, the cutting edge can be guided in such a way that it moves through the starting material web in a translatory manner.

According to a further aspect of the present invention, which can be combined with the preceding aspects and exemplary embodiments, a device for producing a three-dimensional packaging product from a web-shaped starting material is provided which has a forming station which is set up to, by radially inward folding of lateral base material web sections of the base material, two lateral crumple cavities extending in the web direction and a central attachment and/or deformation zone extending in the web direction, in which the folded over base material web sections overlap and are bonded to one another, and a severing station following the preforming station in the conveying direction , which separates a packaging product of a desired length from the starting material. With regard to the features of the generic term, reference is made to the previous statements to avoid repetition.

According to the further aspect of the invention, the severing station comprises a cutting edge and a counter-cutter along which the cutting edge shears in the course of a severing process. The scissors cutting arrangement has proven to be advantageous and efficient with regard to the cutting or severing result. The cooperating cutting edges are particularly suitable for high cutting speeds and a machine device or machine cutting processes.

According to the further aspect of the invention, the device comprises an adjustment device for positioning the shearbar and cutting edge relative to one another. In this way, the coordination required for the scissors cut can be set for optimum shearing of the cutting edge and shearbar along one another. Furthermore, with increasing wear, the positioning of the cutting edge and counter blade can be readjusted relative to one another. Furthermore, it is possible by means of the adjusting device to position the cutting edge and the counter blade relative to one another in such a way that in the cutting engagement, i.e. when shearing along each other, the cutting edge is prestressed against the counter blade, specifically against the conveying direction of the starting material. As a result, the separating operation is carried out reliably.

According to a further exemplary embodiment of the present invention, the cutting edge on the counter blade shears, in particular translationally, along a cutting plane which is oriented transversely to the conveying direction, in particular transversely to the flat extension of the starting material web. The section plane is preferably oriented in such a way that the vertical direction lies in the section plane and the direction of translation section movement is oriented counter to the direction of gravity.

According to a further exemplary development of the present invention, the cutting edge on the shearbar shears in particular translationally along a cutting plane and is prestressed transversely to the cutting plane, in particular counter to the conveying direction, against the shearbar. The pre-tensioning of the cutting edge and counter blade results in a better cutting result and a clean cut of the packaging product.

In a further exemplary embodiment of the device according to the invention, the device comprises a counter blade, along which the blade shears in the course of a severing process. The shearbar is from a shearbar held carrier, which is arranged in particular stationary on the device. Furthermore, the shearbar carrier delimits a conveying path of the starting material web through the device transversely to the conveying direction of the starting material web. In this respect, the counter-blade carrier can form a path-limiting element, in particular in the vertical direction. In this respect, the shearbar support not only serves to store the shearbar, but also to limit the conveying path and thus to reduce the risk of a paper jam.

According to a further exemplary embodiment of the present invention, the device comprises a counter blade, along which the blade shears in the course of a severing process. The shearbar is movably mounted in the conveying direction on a shearbar carrier, which is in particular stationary. The movable mounting of the shearbar on the shearbar support can be created by means of the adjusting device. The preload of the cutter and counter blade can be adjusted via the adjusting device and the movable bearing of the counter blade and counter blade carrier. The adjusting device can, for example, comprise grub screws for shifting the shearbar horizontally, in particular, relative to the shearbar support.

According to a further exemplary embodiment with the device according to the invention, the cutting edge is firmly held by a cutting edge carrier, which is guided in a translatory manner, in particular relative to the stationary counter blade carrier. The cutter support and possibly the guide can be configured in particular such that during a cutting process the cutter moves essentially exclusively along the cutting plane, with avoidance movements in or counter to the conveying direction being essentially ruled out. The translatory guidance of the cutter carrier, oriented in particular in the vertical direction, can be configured by suitable linear guides, such as a straight guide, a rail guide, a slotted guide or the like.

According to a further exemplary embodiment of the device according to the invention, the blade and/or counter blade is made of a material whose working hardness is at least 10 HRC and/or at most 85 HRC, in particular in the range from 40 to 70 HRC. For example, the elongation at break is in the range of at least 0.1% and/or at most 25%, in particular in the range from 0.5% to 15%. For example, the cutting edge and/or the shearbar is made of steel, such as cold work steel, stainless steel or tool steel. The material number 1.2436, for example, can be used as a cold-work steel. A stainless steel can be used with material number 1.4112, material number 1.3343 is suitable as tool steel.

In a further exemplary embodiment of the device according to the invention, the cutting edge has a cutting edge which is inclined at an angle in the range from 93° to 105°, in particular 98°, with respect to the cutting movement direction. In other words, the cutting edge is inclined at an angle in the range from 3° to 15°, in particular 8°, relative to the horizontal. In this way, the cutting edge dips into the starting material web only at certain points during the cutting engagement, so that in the course of a severing process a cut through the starting material web spreads transversely to the conveying direction in the width direction of the starting material web. The cutting point of action moves in the width direction of the starting material web transversely to the conveying direction.

According to a further exemplary embodiment, the device comprises a counter blade, along which the blade shears in the course of another process. In this case, the shearbar has a shearing surface which is oriented, for example, in the conveying direction and which is inclined at an angle in the range from 1° to 10°, in particular 5°, with respect to the cutting movement direction. The inclination of the shearing surface is oriented in such a way that a lower shearing edge facing the cutting edge protrudes furthest in the conveying direction in relation to the shearing surface. Thus, when shearing along each other, the cutting edge can essentially mainly shear along the shearing edge, which improves the cut quality and the effectiveness of the severing operation. Furthermore, this reduces wear on the cutting elements.

According to an exemplary development, the device according to the invention comprises a motor for driving the separating station. As a result, intervention or operation by an operator can essentially be omitted. Furthermore, the device according to the invention is perfectly suitable in this way for an automated packaging production operation, in particular in mass production.

According to a further aspect of the present invention, which can be combined with the preceding aspects and exemplary embodiments, a packaging product, in particular a paper packaging product, is provided which is produced from a web-shaped starting material by means of a device designed according to one of the preceding claims and/or its transverse to the length of the web width measured in the same direction is less than 12 cm and/or its length in the longitudinal direction of the web is less than 30 cm. It has been found in the prior art that there is a great need for miniature packaging products, which can be satisfied by the packaging products of the present invention.

According to a further aspect of the present invention, which can be combined with the preceding aspects and exemplary embodiments, is a system with a device designed according to one of the aspects described above or one of the exemplary embodiments described above for producing a three-dimensional packaging product from a web-shaped starting material and a in particular provided in the conveying direction upstream of the device arranged starting material supply. The supply of starting material can be in the form of a roll of starting material web, in particular in the form of a coreless roll, or a leporello stack. For example, a web-shaped starting material extends from the supply of starting material web into the device, in particular in its preforming station.

Preferred developments are specified in the dependent claims.

• 1 eine schematische Seitenansicht einer beispielhaften Ausführung einer erfindungsgemäßen Vorrichtung;
• 2 eine schematische Seitenansicht einer weiteren beispielhaften Ausführung einer erfindungsgemäßen Vorrichtung;
• 3 eine schematische Darstellung einer beispielhaften Ausführung eines erfindungsgemäßen Verpackungserzeugnisses;
• 4 eine perspektivische Ansicht einer beispielhaften Ausführung der erfindungsgemäßen Vorrichtung;
• 5 eine Seitenansicht der Vorrichtung aus 4;
• 6 eine perspektivische Ansicht der Abtrennstation der Vorrichtung aus den 4 und 5;
• 7-9 perspektivische Teilschnittansichten der Vorrichtung aus den 4 und 5 in unterschiedlichen Betriebspositionen;
• 10 eine schematische Vorderansicht einer Schneide der Abtrennstation aus der 6; und
• 11 eine schematische Teilansicht der Zusammenwirkung der Schneide und der Gegenschneide der Abtrennstation aus 6.

In the following, further properties, features and advantages of the invention are made clear by means of a description of preferred embodiments of the invention using the accompanying exemplary drawings, in which:

• 1 a schematic side view of an exemplary embodiment of a device according to the invention;
• 2 a schematic side view of a further exemplary embodiment of a device according to the invention;
• 3 a schematic representation of an exemplary embodiment of a packaging product according to the invention;
• 4 a perspective view of an exemplary embodiment of the device according to the invention;
• 5 a side view of the device 4 ;
• 6 a perspective view of the severing station of the device of FIGS 4 and 5 ;
• 7-9 perspective partial sectional views of the device from the 4 and 5 in different operating positions;
• 10 a schematic front view of a cutting edge of the separating station from FIG 6 ; and
• 11 a schematic partial view of the interaction of the cutting edge and the shearbar of the severing station 6 .

In the following description of exemplary embodiments of the present invention, a device according to the invention for producing a three-dimensional packaging product from a web-shaped starting material, in particular paper starting material, is generally provided with the reference number 1 . For the description of the following exemplary embodiments with reference to the attached figures, it should be assumed that the overall dimensions of the device 1 shown are dimensioned such that the device 1 can be placed on a standard industrial pallet and does not exceed its dimensions. For example, the overall length of the device is less than 650 mm, the overall width is less than 450 mm, and the overall height is less than 300 mm. The device 1 of the exemplary embodiments shown in the figures is set up to produce small or so-called miniature packaging cushions, the length of which in the web direction of the starting material is less than 120 mm, in particular in the range of 80 mm to 90 mm, measured transversely to the longitudinal direction Width be less than 120 mm, in particular in the range of 80 mm to 90 mm, and their height are less than 40 mm, in particular in the range of 20 mm to 30 mm.

In the 1 and 2 Schematic basic sketches of exemplary embodiments of devices 1 according to the invention are shown, which have an integrated supply of starting material 4 which, for example, is in the form of a Leporello stack ( 2 ) or in the form of a starting material roll, in particular in the form of a coreless roll, ( 1 ) may exist. The device 1 can also be provided with a stand 6 with which the device 1 can be set down on the ground and with respect to which the device 1 can be adjusted in its orientation and on which the device 1 can be adjusted in height.

The device 1 according to the invention is also part of an exemplary embodiment of a system according to the invention, which is generally given the reference numeral 115 and further comprises the source material supply 4 . As stated in the 1 and 2 the system 115 also includes a frame 117 on which the device is fixed, if necessary detachable and/or pivotable, mounted for placing the device 1 on a substrate. A receptacle 119 for the starting material supply 4 is also arranged on the frame 117, which is formed depending on the type of starting material supply 4.

In 3 a schematic representation of a packaging product 100 according to the invention is shown, which is produced from a web-shaped starting material 2 by means of a device 1 according to the invention and/or whose width a measured transversely to the longitudinal direction of the web is less than 12 cm, whose length c in the longitudinal direction of the web is less than 30 cm, whose vertical extent b is in the range from 2 cm to 3 cm. The packaging products 100 according to the invention comprise two lateral crumple cavities 103, 105 extending in the longitudinal direction of the web, which are formed by radially inward folding or inward rolling of lateral starting material web sections of the starting material. Furthermore, the packaging product 100 according to the invention comprises a central fastening and/or deformation zone 107 in which the folded starting material web sections overlap and are bonded to one another. A width of the attachment and/or deformation zone, measured in the width direction, can be in the range from 2 cm to 2.5 cm, the vertical extent e of which is less than 1.5 cm or less than 1 cm.

• eine Vorformstation 3 zum Umformen des bahnförmigen Ausgangsmaterials zu einem dreidimensionalen Zwischenprodukt mit wenigstens einem sich in Bahnrichtung erstreckenden Knautsch-Hohlraum 103, 105, die eine trichterartige Einschlag- oder Einrolleinrichtung 5 aufweist, und einer Abzugseinrichtung 36;
• eine in Förderrichtung F an die Vorformstation 3 anschließende Präge- und/oder Perforationsstation 7 mit einem Paar kämmender Präge- und/oder Perforationsräder 9, 11, die dazu eingerichtet sind, sich überlappende Ausgangsmaterialbahnabschnitte längs einer sich in Bahnrichtung erstreckenden Befestigungs- und/oder Deformationszone 107 aneinanderzubinden;
• eine in Förderrichtung F an die Präge- und/oder Perforationsstation 7 anschließende Abtrennstation 13 mit einer translatorisch geführten Schneide 15 zum Abtrennen eines Verpackungserzeugnisses 100 einer gewünschten Länge von der Ausgangsmaterialbahn 2; und
• eine in Förderrichtung F an die Abtrennstation 13 anschließende Ausgabevorrichtung 17 mit einem Paar einander gegenüberliegenden Stetigförderern 19, 21 zum Abfördern des abgetrennten Verpackungserzeugnisses 100.

A device 1 according to the invention ( 4 ) can be divided into the following main components in the conveying direction, indicated by the arrow with the reference character F in 4 is indicated, divided:

• a preforming station 3 for forming the web-shaped starting material into a three-dimensional intermediate product with at least one crumple cavity 103, 105 extending in the web direction, which has a funnel-like wrapping or curling device 5, and a take-off device 36;
• an embossing and/or perforating station 7 following the preforming station 3 in the conveying direction F and having a pair of intermeshing embossing and/or perforating wheels 9, 11, which are set up for overlapping starting material web sections along a fastening and/or deformation zone extending in the web direction 107 to bind together;
• a separating station 13 following the embossing and/or perforation station 7 in the conveying direction F and having a translationally guided cutting edge 15 for separating a packaging product 100 of a desired length from the starting material web 2; and
• an output device 17 following the separating station 13 in the conveying direction F and having a pair of continuous conveyors 19, 21 lying opposite one another for conveying away the separated packaging product 100.

Looking at the perspective view of the device 1 according to FIG 4 and according to the associated side view 5 , in which the individual components of the device 1 are shown in a reduced and abstract representation, it can be seen that all drive, motor and transmission components are below the conveying path directed through the device 1, which is indicated by the dashed line with the reference symbol P , are arranged.

Viewed against the conveying direction F, the device 1 has a motor 31 for the withdrawal device 17, a motor 32 for the separating station 13 and a common motor 34 for the embossing and/or perforating station 7 and the withdrawal device 36. A possible embodiment for the transmission of the The driving force of the motors 31, 32, 34 to the corresponding pickups is in 6 shown, which will be discussed below. In the area of the extraction device 17, a dispensing device housing 43 can also be seen, which is part of an overall housing 45 of the device. The housing 45 or the dispensing device housing 43 is basically used to prevent an operator from undesirably accessing the interior of the device 1 in order to prevent injuries, as well as to limit the conveying path or the discharge channel 33 and to attach components of the device 1 .

Referring again to the 4 and 5 the device 1 has a gear 36 assigned to the severing station 13 in the form of a coupling gear for converting the torque generated by the drive motor 32 into a translational cutting movement of the cutting edge 15 of the severing station 13 . The up and down movement of the guillotine blade 15 is aligned in such a way that a cutting movement is directed against the direction of gravity, ie from bottom to top in the figure.

The drive motor 34 for the embossing and/or perforation station 7 and for the pull-off device 36 is directed counter to the conveying direction F, so that a drive shaft of the drive motor 34 extends from the motor 34 counter to the conveying direction F. The output shaft of the drive motor 34 can transmit the driving force to a drive shaft 40 of the extraction device 36 via a meshing engagement, for example a bevel gear toothing or a worm wheel toothing 38 . As in particular in 5 As can be seen, the extraction device 36 has two extraction or conveying wheels 46, 48, each mounted on a shaft 42, 44, with which the starting material is drawn into the device 1 and conveyed through it. In 5 can also be seen that the upper feed wheel 46 is movable in the material strength direction, i.e. perpendicular to the flat extension of the starting material within the device 1, which is supported by a rail guide 50 in 5 is indicated. Furthermore, the movable bearing can be coupled via a preload, in particular via a spring preload.

In the execution of the separation station 13 according to 6 the cutting edge 15 is held by a cutting edge support 85 and is firmly accommodated. The severing station 13 also includes a counter blade 87 held against the blade holder 86, which cooperates with the blade 15 during a severing process in such a way that the blade 15 shears translationally along or past the counter blade 87 in order to sever the starting material web.

The cutting edge 15 performs a translation cutting movement during a cutting operation, which is supported by a guide 88 according to FIG 6 is designed as a straight guide and has two guide rods 89, 90 arranged at a distance from one another transversely to the conveying direction F, along which the cutter support 85 is guided in a translatory manner and in particular in the vertical direction and/or counter to the direction of gravity during a severing process.

In execution according to 6 the severing station 13 is equipped with an adjusting device 91, by means of which the cutting edge 15 and counter blade 87 can be positioned relative to one another. In execution in 6 the adjustment device 91 is assigned to the shearbar 87 and is set up to displace the shearbar 87 in the direction of conveyance F or in the opposite direction in order to be able to set the scissor-cut engagement between the shearbar 15 and the shearbar 87, and for example, this allows a direction in the direction of conveyance F oriented biasing force between cutting edge 15 and counter cutter 87 can be set or built up, so that the quality of the cutting process can be increased. The adjusting device 91 has, for example, two adjusting screws 92, 93 which are arranged at a distance from one another transversely to the conveying direction F and which are designed here, for example, as grub screws. Furthermore, in 6 It can be seen that the counter cutters 87 are detachably fastened in the counter cutter carrier 86 via two fastening screws 94 .

In the 7-9 three different operating states of the device 1 according to the invention are shown with a focus on the separating station 13 . In the exemplary embodiment according to 7-9 the severing station 13 is designed as a guillotine cutting station, in which the cutting edge is guided in a translatory manner counter to the direction of gravity. In 7 is the cutting edge 15 of the severing station 13 shortly before the cutting engagement with the starting material web and at the point in time at which the cutting edge 15 shears along the counter cutter 87 . 8th shows the uppermost position of the cutting edge 15 and thus the reversal point from which the cutting edge 15 must be guided vertically downwards again in order to bring it into a starting position before a new cutting process can be started. In 9 is an intermediate position between the top position ( 8th ) and a lowermost position, not shown.

From a synopsis of 7-9 It can be seen that the translational cutting movement of the cutting edge 15 including its cutting edge holder 85 is initiated by a motor 82 whose drive force is transmitted to the cutting edge 15 and the cutting edge holder 85 via a transmission 86 .

In the exemplary embodiments, gear 36 is designed as a coupling gear, in which a connecting rod 96, which is mounted in a rotationally fixed manner on a drive shaft 95, is coupled via a ball joint 97 to a further connecting rod 98, which ultimately applies the torque generated by motor 32 in an axially directed drive actuation force to the Blade 15 or the blade carrier 85 transmits.

From the 10 and 11 shows the constructive implementation of cutting edge 15 and counter cutter 87 as an example. When running in 10 blade 15 has one of the three fastening bores 99 arranged at a distance from one another in a width direction of the blade 15, which is oriented in the width direction of the starting material web and perpendicular to the direction of translation cutting movement, by means of which the blade 15 can be fastened to the blade carrier 85. An essential feature of the cutting edge 15 is its cutting edge 109, which is arranged at an angle α with respect to the broad extension direction of the cutting edge 15 and whose cutting angle alpha is in the range from 30° to 150°. In this respect, in relation to the translational cutting direction of movement, which 10 is oriented downwards, an angle in the range of 93° to 105°. With a given width of the starting materials to be cut, the cutting angle α determines the cutting edge height g and the cutting edge width h. The larger the selected cutting angle α, the shorter the blade height g and the longer the length of the cut of the cutting edge 109. Due to the fact that the cutting edge 109 is inclined, a cut spreads through the starting material web transversely to the conveying direction F in the course of a cutting process in the width direction of the raw material web. In other words, it migrates between the cutting edge 109 and the starting material web resulting and varying cutting engagement point transverse to the conveying direction along the cutting edge 109.

In 11 is a schematic representation of a scissors cut attack between cutter 15 and shearbar of 87 is shown. From this it is clear that the shearbar 87 has a shearing surface 111 which cooperates with the cutting edge 15 in the cutting engagement and which is oriented at an angle of approximately 5° with respect to the translation cutting movement direction. Furthermore, a cutting edge surface 113 adjoining the cutting edge 109 is chamfered in relation to the rest of the cutting blade.

The features disclosed in the above description, the figures and the claims can be important both individually and in any combination for the implementation of the invention in the various configurations.

Reference List

1

contraption

2

stock web

3

preform station

4

stock of feedstock

5

wrapping or rolling device

6

stand

7

Embossing and/or perforating station

9, 11

Embossing and/or perforating wheels

13

cutting station

15

cutting edge

17

dispenser

19, 21

continuous conveyor

31, 32, 34

engine

33

discharge channel

36

trigger device

38

transmission

42, 44

Wave

43

dispenser housing

45

Housing

46, 48

take-off or feed wheels

50

rail guide

85

blade carrier

86

shearbar support

87

shearbar

88

guide

89, 90

guide rod

91

adjustment device

92, 93

adjustment screws

94

mounting screws

95

drive shaft

96, 98

connecting rod

97

ball joint

99

mounting hole

100

packaging product

103, 105

crumple cavity

107

Attachment and/or deformation zone

109

cutting edge

111

shearing surface

113

cutting surface

115

system

117

frame

119

feedstock inventory

f

conveying direction

S

pivot axis

R

swing-up movement direction

P

funding path

a

width of the packaging product

b

height of the packaging product

c

length of the packaging product

i.e

Width of attachment and/or deformation zone

e

Height of attachment and/or deformation zone

a

cutting angle

G

cutting height

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• EP 2711167 B1 [0004]
• US 20210023808 A1 [0005]
• US2021002808A1 [0006]

Claims (16)

Device (1) for producing a three-dimensional packaging product from a web-shaped starting material, comprising a preforming station (3) which is set up to form two lateral crumple cavities (103, 105) extending in the web direction by radially inward folding of lateral starting material web sections of the starting material. and to form a central fastening and/or deformation zone (107) extending in the web direction, in which the folded starting material web sections overlap and are bound to one another, and a severing station (13) following the preforming station (3) in the conveying direction (F), which separates a packaging product of a desired length from the starting material, characterized in that a cutting edge (15) of the separating station (13) is guided in such a way that, in the cutting engagement, it translates the starting material web transversely to the conveying direction (F) counter to the gravitational direction or transversely to the gravitational direction orically severed. Device (1) after claim 1 characterized by a motor for providing motive power and a gearbox for transmitting the motive power to the severing station (13), the gearbox and motor being located below a vertical height defined by the cutting engagement. Device, in particular according to one of the preceding claims, for producing a three-dimensional packaging product from a web-shaped starting material, comprising a preforming station (3) which is set up to create two lateral crumple cavities extending in the web direction by radially inward folding of lateral starting material web sections of the starting material (103, 105) and a central fastening and/or deformation zone (107) extending in the web direction, in which the folded starting material web sections overlap and are bound to one another, and one following the preforming station (3) in the conveying direction (F). Separating station (13), which separates a packaging product of a desired length from the starting material, characterized in that a cutting edge (15) of the separating station (13) is designed and/or mounted in such a way that a cut is made through the starting material web in the course of a severing process q propagates laterally to the conveying direction (F) in the width direction of the raw material web. Device (1) according to one of the preceding claims, characterized in that the cutting edge (15) in the cutting engagement cuts through the starting material web transversely to the conveying direction, in particular transversely to the flat extension of the starting material web. Device (1), in particular according to one of the preceding claims, for producing a three-dimensional packaging product from a web-shaped starting material, comprising a preforming station (3) which is set up to, by radially inward folding of lateral starting material web sections of the starting material, two lateral ones extending in the direction of the web crumple cavities (103, 105) and a web-directional central attachment and/or deformation zone (107) in which the folded base material web portions overlap and are bonded to each other, and a web-direction (F) attached to the preforming station ( 3) subsequent severing station (13) which separates a packaging product of a desired length from the starting material, the severing station (13) having a cutting edge (15) and a counter-knife (87) along which the cutting edge (15) runs during a severing operation shears, characterized by an adjustment device device (91) for positioning the blade (15) and shearbar (87) relative to one another. Device (1) after claim 5 , characterized in that the cutting edge (15) on the counter blade (87) shears in particular translationally along a cutting plane which is oriented transversely to the conveying direction, in particular transversely to the flat extension of the starting material web. Device (1) after claim 5 or 6 , characterized in that the cutting edge (15) on the counter blade (87) shears in particular translationally along a cutting plane and is pretensioned transversely to the cutting plane against the counter blade (87). Device (1) according to one of the preceding claims, characterized by a counter blade (87) along which the blade (15) shears in the course of a severing process, the counter blade (87) being held by a counter blade carrier (86) which is transverse to the Conveying direction (F) of the starting material web limits a conveying path of the starting material web through the device (1). Device (1) according to one of the preceding claims, characterized by a counter blade (87) along which the blade (15) shears in the course of a severing process, the counter blade (87) being mounted on an in particular stationary counter blade carrier (86) in the conveying direction (F ) is movably mounted. Device (1) according to one of the preceding claims, characterized in that the cutting edge (15) is held firmly by a cutting edge support (85) which is guided in a translatory manner, in particular relative to the stationary counter cutting edge support (86). Device (1) according to one of the preceding claims, characterized in that the cutting edge (15) is made of a material whose working hardness is at least 10 HRC and/or at most 85 HRC, in particular in the range from 40 to 70 HRC, with the Blade (15) is made of steel, such as a cold work steel, a stainless steel or a tool steel. Device (1) according to one of the preceding claims, characterized in that the cutting edge (15) has a cutting edge which is inclined at an angle in the range from 91° to 140°, in particular 98°, with respect to the cutting movement direction. Device (1) according to one of the preceding claims, characterized by a counter blade (87) along which the blade (15) shears in the course of a severing process, the counter blade (87) having a shearing surface which is at an angle in the range of 1 ° to 20 °, in particular 5 °, relative to the direction of cutting movement is inclined. Device (1) according to one of the preceding claims, characterized by a motor for driving the separating station (13). Packaging product which is produced from a web-like starting material by means of a device (1) designed according to one of the preceding claims and/or whose width measured transversely to the longitudinal direction of the web is less than 12 cm and/or whose length in the longitudinal direction of the web is less than 30 cm. System comprising a device (1) according to one of Claims 1 until 14 and a starting material supply arranged in particular upstream of the device (1), in particular a starting material web roll or a Leporello stack, wherein a web-shaped starting material preferably extends from the starting material web supply into the preforming station (3).

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